504402013 has 2 divisors, whose sum is σ = 504402014. Its totient is φ = 504402012.

The previous prime is 504402011. The next prime is 504402043. The reversal of 504402013 is 310204405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382476249 + 121925764 = 19557^2 + 11042^2 .

It is a cyclic number.

It is not a de Polignac number, because 504402013 - 2¹ = 504402011 is a prime.

Together with 504402011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (504402011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252201006 + 252201007.

It is an arithmetic number, because the mean of its divisors is an integer number (252201007).

Almost surely, 2^504402013 is an apocalyptic number.

It is an amenable number.

504402013 is a deficient number, since it is larger than the sum of its proper divisors (1).

504402013 is an equidigital number, since it uses as much as digits as its factorization.

504402013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 504402013 is about 22458.8960770560. The cubic root of 504402013 is about 796.0229769762.

Adding to 504402013 its reverse (310204405), we get a palindrome (814606418).

The spelling of 504402013 in words is "five hundred four million, four hundred two thousand, thirteen".